Hoạt động: Quan sát

Navigating the Night Sky

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Equatorial Sundial

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Light pollution, an introduction to astronomy/environmental education

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Light pollution

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Working before observations

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Observation of variable stars

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Determining longitude and latitude

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Where Are You? Locating by the Sun

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Studies on the Shadow of an Obelisk Used as Horizontal Sundial

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Measuring the diameter of the Sun

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Observations with a Pinhole Camera

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Let us measure the excentricity of the terrestrial orbit

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Let us observe the daily path of the Sun

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